Home / 18,071.28-27,111.60-6,385.68

Finding the Fourth Proportional to 18,071.28, 27,111.60 and 6,385.68

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Solution

The fourth proportional to 18,071.28, 27,111.60 and 6,385.68 is: 9,580.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,071.28 : 27,111.60 = 6,385.68 : x
  2. Step 2: Convert to fraction form
    18,071.28/27,111.60 = 6,385.68/x
  3. Step 3: Cross multiply
    18,071.28x = 27,111.60 × 6,385.68
  4. Step 4: Simplify right side
    18,071.28x = 173,126,001.89
  5. Step 5: Solve for x
    x = 173,126,001.89/18,071.28
  6. Step 6: Final answer
    x = 9,580.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.